Warp-stop-motion for looms.



Patented lan. 8, I90I.

l '.l. c. BRYAN. WARP STOP MUTIDN F08 LOUMS.

(Application man occ. 14, Less.)

'im man.)

ggz,

5 6 7 ll a@ A l n 'lllll .Ilw

. @y 7;9 Jmomays,

'ri-1g Nonms PETERS co., Puomiwo, wAsHmsToN. n c.

Nrgrs JOHN C. BRYAN, O F AUGUSTA, GEORGIA.

WARP STOP-MOTION FOR LOOMS.

SPECIFICATION forming' part of Letters Patent No. 665,401, dated January 8, 1901.

Application iiled October 14, 1899. Serial No. 733,627. (No model.)

To all whom, it may concern.'

y Be it known that I, JOHN O. BRYAN, a citizen of the United States, residing at Augusta, in the county of Richmond and State of Georgia,

have invented a new and useful Warp Stop-' Motion for Looms, of which the following is a specication.

This invention relates to a stop-motion for looms; and the object in View is to provide a simple and effective attachment adapted for application to looms generally and combininga series of structural features in part movable by and attached to actuating mechanism well known in looms now commonly employed and producing an automatic shifting of the operating devices of a loom to render the latter inactive through the medium of a series of movable locking elements which are normally held out of locking position by connections engaging the warp-threads, and upon the breakage of any one of said threads the element that may have been connected thereto will immediately lock the parts of the attachment and the loom as an entirety will be immediately thrown into inactive condition by the motion of a part of the mechanism thereof connected to the improved attachment. It is the intention also by the use of the improved attachment to render a loom inactive almost instantaneously with the breakage of any one of the warp-threads in a purely automatic manner without the least assistance of an operative, and thus avoid the serious consequences and loss arising from inattention in ordinary looms at the time of such accidents.

Other objects and advantages will appear. in the subjoined description and will be structurally claimed, the preferred embodiment of the attachment being illustrated in the accompanying drawings, though subject to a Wide range of modiiication, particularly in adapting the several parts to dierent kinds of looms.

In the course of the following description reference will be made to a belt-shifting or a clutch mechanism which will be actuated by the attachment to render the loom inactive immediately after the breakage of any one of the warp-threads, and it is to be understood that no special form of clutch or belt-shifting mechanism must necessarily be used.

In the drawings, Figure l is a perspective View of portions of a loom necessary to illustrate the invention and including a series of warp-threads and showing the improved attachment in operative relation thereto. Fig. 2 is a longitudinal vertical section through a portion of the loom mechanism and the improved attachment. Fig. 3 is a detail elevation of portions of the mechanism, showing the connection thereof.

Similar numerals of reference are employed to indicate corresponding parts in the views.

The numeral 1 designates parts of the opposite sides of a loom-frame, 2 the lay-arms, and 3 and 4 lease-rods. The portions l of the sides of the frame have studs projecting inwardly therefrom, and on the inner terminals of said studs the lower ends of side bars or uprights 6 are pivotally mounted. Though not an essential construction, the lower ends of the said side bars or uprights G may be pivotally attached to the inner extremities of the studs 5 by angle-couplings, and between the same and collars 7 against the inner faces of the portions l, coiled springs 8 surround the studs and are connected at their opposite ends, respectively, to said collars and the pivotal couplings for the lower ends of the side bars or uprights 6, one spring exerting a tension in one direction and the other in a reverse direction to thereby operate to hold the side bars or uprights, together with the parts carried thereby, in normal erect position. The tension of the springs 8 is controlled by the rotation of the collars 7 on the studs 5, and the adjustable position of said collars is adapted to be maintained by set-screws 9. The side bars or uprights 6, at a suitable distance above the pivotal connection thereof, have couplings 10 thereon, which are provided, preferably, with four attaching members and serve to give bearing to the opposite extremities of a tubular connection 1l, which ties said side bars or uprights. The upper extremities of the said side bars or uprights are also connected by a stop-rod 12, which braces the same and prevents said bars or uprights from moving inwardly toward each other or becoming misshapen, and at a short distance above the said rod 12 a bearing-rod 13 is located and let into terminal slots 14, formed in the upper ends of said IOO bars or uprights, suitable nuts being employed, as shown, for holding the bearing-rod in Iixed relation to the bars or uprights.

In the tubular connection 11 a bearing-rod 15 is movably mounted, and the opposite ends thereof are connected by couplings 1G to the side rods 17 of a rocking frame 18, the upper ends of said side rods being connected or attached to a transversely-extending rod or feeler lll, which moves above the plane of the bearing-rod 13. The rods 17 are crooked around the studs 5, as at 20, and to the lower ends thereof links 21 are movably secured and also pivotally connected to pins 22, which are detachably and adjustably held in connection with the lay-arms 2. The pins 22 may bein the form of bolts, which are adapted to be seated in any one of the openings in the said lay-arms, which are already formed in the latter devices, for other purposes in some kinds of looms, and as the lay-arms oscillate the rocking frame 1S is moved in timed relation therewith as long as the loom is active.

A shifting rod 23 is rigidly connected to and extends forwardly from one of the couplings 10 and has its front terminal movably attached to a crank 24 on the inner end of a short shaft 25, mounted in the adjacent side portion of the frame of the loom, as shown in dotted lines in Fig. 1, and having fixed on its outer end a cam 26. Immediately above the shaft 25 an outstanding segmental guide 27 is secured and has a slot 28 therein, with a notch 29 in a plane at right angles thereto, formed in the inner extremity of one of the sides, preferably the front one. In the slot 23 a lever 30 is shiftably mounted and is adapted to have its lower end movably attached to belt-shifting or clutch mechanism which is operable to control the activity of the loom relatively to a driving-shaft which may be used to actuate a series or gang of looms, and to automatically force the lever outwardly when released from the notch 29, a plate-spring 31 is interposed between the inner side of said lever and the adjacent side portion of the loom-frame. The lever 30 and guide 27 are features of construction commonly known in looms and are subject to modification and extended variation in view of the fact that the belt-shifting mechanism or clutch devices of dilferent looms have individual peculiarities and characteristics which require a change in the operating devices theret'or, and in explaining the specific form of device shown in the drawings the intention is to illustrate a practical application of a portion of the improved attachment.

On the bearing-rod 13 a series of locking elements or detectors 32 are movably mounted and are positioned to extend in opposite directions in planes parallel with the run of the warp-threads beneath the same. These locking elements have the rod 13 extending through the central portions thereof, and the opposite extremities are provided with upstanding hooks 33 and terminal eyes 34, the

distance of the said bearing-rod 13 below the plane of movement of the transversely-extending rod or feeler 19 of the frame 1S being such as to cause eitherof the hooks 33 to engage the said rod or feeler 19 when the elements are freed to swing up by an operation which will be presently described, and the stop-rod 12 prevents the elements from turning completely over and serves to brace the connection of the latter with the rod or fceler 19 of the frame 18, and facilitate the positive operation of the attachment. Tensionthreads 35 are loosely and movably threaded through the eyes 34 and have fastened to the ends thereof elongated hooks 36, the said threads being of equal length throughout the whole series of elements, and the hooks 3G are arranged in approximately parallel relation at equal distances froln the said eyes. Four hooks are supported by each element or detector 32 and are arranged to engage many warp-threads, two of the hooks taking an upper part of said threads and the remaining hooks a lower part of the same. This manner of engagement of the warpthreads by the several hooks is carried ont regularly through the whole series of locking elements or detectors, and as many of the latter will be used as necessary to completely connect the number of warp-threads that may be employed in the weave.

In arranging the improved attachmentit is disposed between the planes of the leaserods, transversely considered, and also partially above and below the warp-threads, the latter running through a portion of the device, which is open to permit unrctarded movement of the said threads. To suit different kinds of looms, this precise arrangement may be varied, though it is most convenient in view of the fact that the hooks 36 can be easily engaged with the warp-threads at said point. as will be obviously apparent. It is also preferred that the several parts be constructed in the main of light tubing for convenience of assemblage and by reason of the durability of such material. The locking elements or detectors 32 can also be readily formed from sheet-steel or other suitable material very rapidly by the use of a com mon pattern having proportions commensurate with a predetermined scale, and the hooks 36 will be made up from wire of a suitable gage and long enough to prevent the warp-threads from becoming disconnected therefrom during the normal operation or feed of the same. After the attachment has been arranged as shown by Fig. 1 and all the locking elements connected to the warp-threads, as previously indicated, the said threads will be free to feed alternately over and under the lease-rods and through the hooks 36, the locking elements remaining in the position shown by Fig. l, or nearly in such position, and which will be regulated by the vibration of the said Warpthreads. As soon, however, as any one of the warp-threads breaks the tension on the IOO IIO

IIS

thread 35, which has had either one of its hooks 36 in connection with the thread that has broken, will be immediately relaxed and the adjacent extremity of the locking element or detector affected will be thrown up and the hook 33 at said point will bear upon the transverse rod or feeler 19, the latter, as explained, having a continuous rocking movement over the plane of the locking element through the operation of the lay-arms. The upward tendency of the relieved extremity of alocking element is due to the restraint or restriction against movement exerted on the other extremity, and almost simultaneously with the engagement of the hook 33 of the relieved extremity of the locking element or detector with the rod or feeler 19 the beltshifting or clutch mechanism of the loom will be operated to render the said loom inactive and obviate the serions defects that would arise by a broken warp-thread in the weave. Up to the time of the breaking of the Warp-thread the side bars or uprights 6 will have remained about in the position shown in Fig. 1, but of course responsive to the slight vibration of the machine. At the time that the relieved extremity of the locking element or detector strikes the rod or feeler 19 and becomes operatively engaged therewith and held in such engagement by the stop-rod 12 the side bars or uprights 6 will be moved with the rocking frame 1S and the shifting rod 23 actuated to throw the crank 24 forwardly or backwardly and bring the cam 26 on the outer end of the shaft 25 to bear against the frontside edge or face of the shifting lever 30 and throw the latter out of the notch 29 to permit the spring 31 to exert its outward pressure, and thereby move the belt-shifting or clutch mechanism in such direction as to throw the loom out of operative connection with the driving mechanism of the plant and immediately render it inactive.

The side bars 6, together with the'connection therefor, and the rods 13 produce a support for the locking elements that will always tend to assume an erect position as long as said elements are in normal condition; but as soon as the said normal condition of the elements is disturbed by the breaking of any one of the warp-threads of the series thereunder the said support immediately becomes active through the operationl of the rocking frame 1S, and the desired result is immediately attained.

Having thus described the invention, what is claimed as new is 1. In a stop-motion for looms, the combination of shipping mechanism, a movable support connected to the shipping mechanism having a horizontal portion, a rocking frame having a horizontal connecting part located above the plane of the support, detectors pivoted intermediate their ends on the horizontal portion of the support for engagement with the connecting part of the frame, and

flexible connections between the opposite ends of the said detectors and the Warpthreads below.

2. In a stop-motion for looms, the combination of shipping mechanism, a normally erect movable support, locking-detectors pivotally mounted on said support above the plane of the warp-threads, connecting devices between the opposite extremities of said detectors and the Warp-threads, a rocking frame having a portion movableuabove the plane of the locking-detectors, and intermediate devices between the said movable support and shipping mechanism.

3. A stop-motion for looms comprising shipping mechanism, a movable support connected to the shipping mechanism, a rocking frame in intimate relation to and movable above the plane of said support and actuated by the lay-arms of the loom, said rocking frame having a horizontal connecting part above the warp-threads, and detectors loosely mounted on the movable support and having their opposite extremities flexibly attached to the warp-threads below, the said detectors being engageable at either end with the connecting part of the frame.

4. Astop-motion foi-looms comprisingshipping mechanism, a movable support connected to the shipping mechanism, a series of detectors on the said support completely above the plane of the warp-threads and having their opposite extremities iiexibly attached to the latter, a device carried by the upper part of the support for limiting the downward movement of the detectors, and an oscillating rod actuated by the lay-arms of the looms and located above and engageable by opposite extremities of said detectors.

5. Astop-motionforloomscomprisingshipping mechanism, a series of movable detectors having opposite engaging extrem ities and completely supported in a plane above and held in normal position by flexible connections with the warp-threads below, means for limiting the downward movement of the detectors, and a transversely-extending rocking rod above the said detectors for engagement by the latter, whereby a breakage of any one of the warp-threads will cause the released detector to engage the rocking rod and transmit the motion of the latter through the support for the detectors to the shipping mechanism to render the latter inactive.

6. A stop-motion for looms comprising shipl ping mechanism, a normally erect movable support connected to the shipping mechanism, a movable frame having part thereof located above the said support, and a series of detectors carried by said support and ,completely located above and having their opposite extremities iiexibly connected to the Warp-threads, said detectors each being loosely and independently movable of the others and provided with opposite end engaging devices to unite the support and frame.

7. A stop-motion for looms comprising ship- IOO IIC

IIS

ping mechanism, a series of movable supporting-detectors adapted to control the shipping mechanism and having the opposite extremities of each flexibly connected to the warpthreads, and a transversely-extending rocking rod above the plane of the said detectors and actuated by the lay-arms of the loom, the said detectors being normally supported in planes at right angles to and engageable with the rod.

S. A stop-motion for looms, in combination with shipping mechanism for the latter, comprising a movable su pport connected to the shipping mechanism, a series of movable detectors carried by the said su pport completely located above and adapted to be connected at opposite extremities to the \varpthreads, a stop below the said detectors for limiting the throw of the same, and a movable device arranged over the said detectors and adapted to be engaged by either extremity of each of thelatter upon the breakage of any one of the warp-threads to Which they are connected.

9. In a stop-motion for looms, the combination of shipping mechanism, a normally erect movable support connected to the shipping mechanism of the loom, lay-arms, a rocking frame actuated by the lay-arms and having a portion extending upwardly adjacent opposite sides of and over the said support, and locking-detectors carried by the said support and having an independent operation, the said detectors being completely located above and normally connected to the Warp-threads and upon the breakage of .the latter adapted to have either extremity of each couple with the portion of the rocking frame extending thereover.

l0. A stop-motion for looms, comprising a normally erect movable support, a rocking frame adjacent the support, and a plurality of detectors movably mounted on the said support and adapted to be connected to the warp-threads below, each detector comprising a body with an upwardly-opening hook at each extremity and an eye adjacent each hook, and threads loosely mounted in the eyes at the opposite ends of the detectors and having hooks at their free extremities to engage the warp-threads.

ll. A detector for a stop-motion of a loom having an intermediate bearing portion and an upwardly-directed open hook at each end With an eye adjacent to each hook and below the latter. f

In testimony that I claim the foregoing as my own I have hereto afiixed my signature in the presence of two Witnesses.

JOHN C. BRYAN.

Witnesses:

M. PERRY HAHN, OHAs. S. HYER. 

